Police searched Shane Tamura’s employee locker at a Las Vegas Strip casino in their attempts to piece together why he killed ...

New York City’s deadliest shooting in 25 years – in a state with some of the toughest gun laws in the nation – is raising ...

Authorities confiscated several items from a Las Vegas apartment tied to a gunman who used an AR-15-style rifle to kill four ...

There were 23 shell casings and 13 bullet fragments recovered from the lobby of 345 Park Avenue and 24 spent shell casings on ...

Among the dead were a police officer, a security guard and two people who worked at companies in the building. An NFL ...

Police have identified the man who entered a Midtown Manhattan office building wearing body armor and opened fire killing ...

"He comes with a machine gun. He's not going to know who I am. He's going to shoot, no matter what," Sebije Nelovic said in a ...

NFL Commissioner Roger Goodell expressed sorrow following the deadly shooting at a New York City office building that left ...

The Las Vegas casino security supervisor who sold the assault-style rifle used in Monday's mass shooting in a Park Avenue office building complied with the law, his attorney said.

Police say a gunman who killed four people in a Manhattan skyscraper before taking his own life claimed to have a brain ...

A former high school football player who opened fire in a Manhattan building Monday — killing four people before fatally ...

The degree of damage on the upper floor, where only one person was killed, shows how the sunglasses-sporting killer was spiraling out of control as his plan to get to the NFL offices inside 345 ...